* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
}

.clearfix:before,
.clearfix:after {
  display: table;
  content: '';
}
.clearfix:after {
  clear: both;
}
/* 滑动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-thumb {
  background-color: #cccccc;
  border-radius: 8px;
}
::-webkit-scrollbar-track-piece {
  background-color: transparent;
  border-radius: 8px;
}
